<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script>
function show(a, b)
{
	alert('this是：'+this+'\na是：'+a+'\nb是：'+b);
}

//show(12, 5);
show.call('abc', 12, 5);
</script>
</head>

<body>
</body>
</html>
